气候变化领域集成服务门户(CCPortal): Interannual variability of surface air temperature over mid-high latitudes of Eurasia during boreal autumn

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DOI	10.1007/s00382-019-04738-9
	Interannual variability of surface air temperature over mid-high latitudes of Eurasia during boreal autumn
	Chen S.; Wu R.; Song L.; Chen W.
发表日期	2019
ISSN	0930-7575
起始页码	1805
结束页码	1821
卷号	53 期号:2020-03-04
英文摘要	This study analyzes the dominant modes of interannual variability of surface air temperature (SAT) during boreal autumn over the mid-high latitudes of Eurasia and investigates their associations with snow cover, atmospheric circulation and sea surface temperature (SST). The first, second and third empirical orthogonal function (EOF) mode of autumn SAT anomalies displays same-sign distribution, an east–west dipole pattern and a south–north dipole pattern, respectively. Analysis of surface heat fluxes indicates that snow changes explain only small patches of SAT anomalies related to the first two EOFs via altering surface shortwave radiation. Atmospheric circulation anomalies have important contributions to the formation of SAT anomalies. Southerly (northerly) wind anomalies generally favor positive (negative) SAT anomalies via bringing warmer (colder) air from lower (higher) latitudes. The atmospheric circulation anomalies related to the first EOF mode are attributed to a combination of the Arctic Oscillation (AO) and the Scandinavia pattern and those related to the second EOF mode have a close relation with the East Atlantic/West Russian (EAWR) and circumglobal teleconnection (CGT) patterns. Formation of the atmospheric circulation anomalies related to the third EOF mode is partly related to the Arctic sea ice change around the Barents–Kara Seas. SST anomalies have little contribution to the atmospheric circulation anomalies associated with the first three EOF modes of Eurasian autumn SAT interannual variations. Hindcast skill of the SAT anomalies related to the first (second) EOF mode is improved when taking both the AO and Scandinavia (EAWR and CGT) patterns into account. © 2019, Springer-Verlag GmbH Germany, part of Springer Nature.
英文关键词	Arctic sea ice; Atmospheric teleconnection pattern; Boreal autumn; Snow; Surface air temperature
语种	英语
scopus关键词	air temperature; annual variation; Arctic Oscillation; atmospheric circulation; autumn; sea ice; sea surface temperature; snow cover; teleconnection; Eurasia; Scandinavia
来源期刊	Climate Dynamics
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/146130
作者单位	Center for Monsoon System Research, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, 100029, China; Institute of Urban Meteorology, China Meteorological Administration, Beijing, China; State Key Laboratory of Numerical Modeling for Atmospheric Sciences and Geophysical Fluid Dynamics, Institute of Atmospheric Physics, Chinese Academy of Sciences, Beijing, China; School of Earth Sciences, Zhejiang University, Hangzhou, China
推荐引用方式 GB/T 7714	Chen S.,Wu R.,Song L.,et al. Interannual variability of surface air temperature over mid-high latitudes of Eurasia during boreal autumn[J],2019,53(2020-03-04).
APA	Chen S.,Wu R.,Song L.,&Chen W..(2019).Interannual variability of surface air temperature over mid-high latitudes of Eurasia during boreal autumn.Climate Dynamics,53(2020-03-04).
MLA	Chen S.,et al."Interannual variability of surface air temperature over mid-high latitudes of Eurasia during boreal autumn".Climate Dynamics 53.2020-03-04(2019).